# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface
from itemadapter import ItemAdapter


class ZhihubookPipeline:
    def open_spider(self, spider):
        self.file =open("doubanBook.csv","a",encoding="UTF-8")
        pass
    def close_spider(self, spider):
        self.file.close()
        pass
    def process_item(self, item, spider):
        self.file.write(f"{item["book_name"]},{item["book_intruduct"]},{item["book_url"]},{item["book_img"]}\n")
        return item
